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Translated from Matematicheskie Zametki, Vol. 50, No. 4, pp. 96–101, October, 1991.

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Pekarev, É.L. Extreme subsets of operator intervals. Mathematical Notes of the Academy of Sciences of the USSR 50, 1051–1054 (1991). https://doi.org/10.1007/BF01137737

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  • DOI: https://doi.org/10.1007/BF01137737

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